Granted Patent
Utility
US 4,428,800 · App. 06/418,286
Measurement of gaseous fluoride concentration using an internal reference solution
Inventor:
Gary P. Tarcy
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Sep 15, 1982
Inventor
Gary P. Tarcy
Assignee (at issue)
Aluminum Company of America
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.